# The 20 April 1970 letter with Z13

> The 20 April 1970 letter with Z13

Source: https://mysteriesdept.com/mysteries/zodiac-ciphers/artifacts/ART0D71PQ7G6W87/the-20-april-1970-letter-with-z13  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Mysteries](https://mysteriesdept.com/mysteries)[Zodiac ciphers](https://mysteriesdept.com/mysteries/zodiac-ciphers)[Artifacts](https://mysteriesdept.com/mysteries/zodiac-ciphers#artifacts)The 20 April 1970 letter with Z13

**ART** 0D71PQ7G6W87·Artifact · document

# The 20 April 1970 letter with Z13

PhotographCC BY-SA 4.0Mailed 20 April 1970

[Cite][Download](https://mysteriesdept.com/files/d/e0e2b1d20e8ec572b32b1247557389e115b3e6740ec957d3f009444305cb619f)

[![The 20 April 1970 letter with Z13: transcription](https://mysteriesdept.com/files/e0e2b1d20e8ec572b32b1247557389e115b3e6740ec957d3f009444305cb619f.png)](https://mysteriesdept.com/files/e0e2b1d20e8ec572b32b1247557389e115b3e6740ec957d3f009444305cb619f.png)

The 20 April 1970 letter with Z13: transcription

2230redondo, 1970. CC BY-SA 4.0

## Copies 1

**Transcription** 2230redondo · commons.wikimedia.org · 2021-10-15 · CC BY-SA 4.02 steps from the original

[Where it's published](https://commons.wikimedia.org/wiki/File:My_Name_is_Cipher_-_Zodiac.png)[Download](https://mysteriesdept.com/files/d/e0e2b1d20e8ec572b32b1247557389e115b3e6740ec957d3f009444305cb619f)

## Where it was made

[San Francisco, California](https://mysteriesdept.com/records/PLC0D71P92C0D1S/san-francisco-california) · City

## Sources 2

- [The Solution of the Zodiac Killer's 340-Character Cipher](https://mysteriesdept.com/sources/SRC0D71P64M215H/the-solution-of-the-zodiac-killers-340-character-cipher)_SRC_
- [Zodiac Sends New Letter - Claims Ten](https://mysteriesdept.com/sources/SRC0D71P7BP64G3/zodiac-sends-new-letter-claims-ten)_SRC_

## Cite it

```
Mysteries Department. (2026). The 20 April 1970 letter with Z13 [Artifact ART0D71PQ7G6W87]. https://mysteriesdept.com/r/ART0D71PQ7G6W87
```

Key

**ART** 0D71PQ7G6W87

Kind

Document

Held by

Law enforcement evidence (custody not confirmed)

Dated

mailed 20 April 1970

Licence

CC BY-SA 4.0

Place

[San Francisco, California](https://mysteriesdept.com/records/PLC0D71P92C0D1S/san-francisco-california)

Part of

[Zodiac ciphers](https://mysteriesdept.com/mysteries/zodiac-ciphers)

The record

Every record is open data. Take this one as JSON, with its links and its history.

[JSON](https://mysteriesdept.com/api/v1/records/ART0D71PQ7G6W87)